Brendan Ashby (born June 30, 1980 in Gweru) is a retired Zimbabwean swimmer, who specialized in backstroke events. Since 2004, Ashby currently holds two Zimbabwean records in the 100 and 200 m backstroke from the World championships and U.S. invitational meets. He is also a former member of the swimming team for the Alabama Crimson Tide at the University of Alabama in Tuscaloosa.